Phase Relation is a part of Colon Classification.

1. Phase
Relation
Bachelor of Library and Information Science(1st
Semester)
JADAVPUR UNIVERSITY
DEPARTMENT OF LIBRARY AND INFORMATION
SCIENCE

2. OBJECTIVES
• IDENTIFY DIFFERENT TYPES OF PHASE RELATION TO
FORM COMPLEX SUBJECT.
• CLASSIFY DOCUMENTS THAT DISPLAY PHASE RELATION ,
USING THE COLON CLASSIFICATION .

3.  Dr. S.R. Ranganathan first introduced the term ‘Phase’. In the very
first edition (1937) of his Colon Classification(CC) he used the symbol as
a bias device to bring together .
Each component of an assemblage, whether of subject or isolates is
called Phase , and the bond or relation of the components is called
Phase relation.
The well-defined concept of distinctive phase relations and their
notational representations have enabled CC to assign homonym-free
specific class numbers to complex subjects and complex isolates ,
indicating their phase relations.

4. KINDS OF
RELATIONS
General relation
Bias relation
Comparison relation
Difference relation
Tool relation
Influencing relation

6. INTER-SUBJECT PHASE
RELATION
 Relation between mathematics and physics. B0ac
(General relation)
 Mathematics for physicist. B0bc (Bias relation)
 Physics and mathematics- a comparative study. B0cc
(Comparison relation)
 Difference between mathematics and physics. B0dc
(Difference relation)
 Application of mathematics in physics. B0ec (Tool
relation)
 Influence of mathematics on physics (it is not
mathematical physics). B0gc (Influencing relation)
SCIENCE
Mathematics
Physics
Chemistry
Etc.

7. INTRA - FACET PHASE
RELATION
MEDICINE Relation between tort and crime. Z,
40j5 (General relation)
 Physiological anatomy. L : 20k3 (Bias
relation)
 Hinduism compared to Buddhism.
Q20m4 (Comparison relation)
 Difference between Hinduism and
Buddhism. E : 20n3 (Difference relation)
 Application of wave mechanics to
quantum physics. Cn10pn2 (Tool
relation)
 Influence of consumption on
production. X : 20r1 (Influence relation)
Facet 1
Medicine
Physiology
Psychology
Anatomy (biased)
Others
Facet 2

8. INTRA–ARRAY PHASE
RELATION
SOCIOLOGY
 Relation between Education for deaf and
Education for blind.T670t8 (General relation)
 Study of Rural folk for City folk. Y310u5
(Bias relation)
 Rural folk and Urban folk – a comparative
study.Y310v3(Comparison relation)
 Difference between Rural folk and City folk.
Y310w5(Difference relation)
 Influence of Temperature on Atmospheric
pressure. U2820y4(Influence relation)
Facet 1
Social group by
population cluster
Rural folk Urban folk
Facet 2
Activities